acroplasm

例句：

1. 1. The acroplasm layer is the outermost layer of the skin.
   角质层是皮肤的最外层。
2. 2. The acroplasm layer plays a crucial role in wound healing.
   角质层在伤口愈合中起着关键作用。
3. 3. The acroplasm layer helps to protect the skin from environmental damage.
   角质层有助于保护皮肤免受环境损害。